circulating water mains 循环水态管 ; 循环水总管
water mains detail 自来水干线
Ring Road to water mains 环形给水管路
Disinfecting Water Mains 消毒总水管
city water mains 城市自来水管
fire water mains 消防主水管
mains water 自来水
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N-COUNT A water main is a very large underground pipe used for supplying water to houses and factories. 总水管
The house is far from water mains and electricity and relies on its own generators.
这座房子远离自来水总管和供电网，依靠自备的发电机。
Water mains are hard to inspect, particularly if they are underground.
供水主管道特别是地下管线很难监测。
The quake destroyed the city’s water mains, paralyzing the fire department.
地震破坏了输水管道，消防署也无能为力。
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